/*
 * Copyright 2006 Robert Burrell Donkin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package rat;

import java.util.Comparator;

/**
 * Compares comparables but all directories are last.
 */
public class DirectoryLastComparator implements Comparator {

	public int compare(Object subjectOne, Object subjectTwo) {
		int result = 0;
		Comparable comparableOne = (Comparable) subjectOne;
		Comparable comparableTwo = (Comparable) subjectTwo;
		if (comparableOne instanceof Directory) {
			result += 100;
		}
		if (comparableTwo instanceof Directory) {
			result -= 100;
		}
		if (result == 0) {
			result = comparableOne.compareTo(comparableTwo);
		}
		return result;
	}

}
